Rim lock assembly



Oct. 31, 1961 F. 1.. ERICKSON RIM LOCK ASSEMBLY 2 Sheets-Sheet 1 FiledJune 12. 1958 lililsi Oct. 31,, 1961 F. L. ERICKSON 3,006,179

RIM LOCK ASSEMBLY Filed June 12, 1958 2 Sheets-Sheet 2 United StatesPatent M 3,006,179 RIM LOCK ASSEMBLY Francis L. Erickson, Rockford,Ill., assignor to National Lock Co., Rockford, 11]., a corporation ofDelaware Filed June 12, 1958, Ser. No. 741,570 Claims. (Cl. 70-129) Thepresent invention relates to a rim lock assembly and more particularlyto a novel one-piece rim lock so constructed as to be readily and easilyinstalled at the interior of the door.

Among the objects of the present invention is the provision of a noveln'm lock that is more economical to produce and install than prior typesof rim locks in which a wafer or pin tumbler is installed on theexterior of (tihe door and the lock box or housing at the interior ofthe cor.

In the present novel assembly, the plate or pin tumbler lock requiresbut a single drilled opening through which projects the lock cylinderand its contained lock assembly with the cylinder integral with the backplate of the lock box or housing and the latter with its assembled backplate secured to the interior of the door by two wood or sheet metalscrews so that the entire assembly may be quickly and easily installed.

It is, therefore, an important object of the present invention toprovide a novel rim lock assembly in which only the lock cylinder andits contained tumbler lock projects to the exterior of the door, thecompletely assembled lock box being mounted at the interior with onlythe cylinder and contained lock projecting outwardly through an openingin the door to the exterior thereof.

Another feature of the present invention is the provision of asimplified and compact rim lock assembly comprising a housing at theinterior of the door, a lock bolt and actuating mechanism in saidhousing, a knob for operating said actuating mechanism from the interiorof the door to project the bolt to locked or unlocked position, acylinder and plug sub-assembly carried by and projecting from the backplate of the housing and projecting through a single opening in the doorto the exterior thereof for retracting the bolt from locking position orfor projecting the bolt to locking position by insertion and turning ofthe proper key, and means in said housing for dead-locking said bolt.

The present invention further comprehends a novel dead locking featureaccomplished by the dual performance of a flat or leaf spring soconstructed and arranged with respect to the lock or latch bolt as totensionally retain the latter in retracted position and when the bolt isextended to locking engagement the spring retains the bolt indead-locked position.

Further objects are to provide a construction of maxi-mum simplicity,efliciency, economy and ease of assembly and operation, and such furtherobjects, advantages and capabilities as will later more fully appear andare inherently possessed thereby.

In the drawing:

FIGURE 1 is a view in perspective of the novel onepiece rim lockassembly with the lock bolt projected to locking position.

FIG. 2 is a view in front elevation of the rim lock assembly of FIG. 1,but with the knob turned to unlocked position and the lock boltretracted, and showing dotted the outline of the interior and containedassembly in the housing.

FIG. 3 is a view in vertical cross section taken on substantially theline 3-3 of FIG. 2 and viewed in the direction of the arrows.

FIG. 4 is a view in rear elevation of the bolt box or housing with therear plate and its cylinder sub-assembly removed and the bolt retracted.

3,006,179 Patented Oct. 31, 1961 FIG. 5 is a view similar to FIG. 4 butwith the latch bolt removed to show the knob cam and its eccentric pinfor actuating the bolt.

FIG. 6 is a view in front elevation of the interior of the rear platewhich carries the integral cylinder and the contained plate tumbler lockassembly and showing the plug cam for actuating the bolt from theexterior of the door.

(FIG. 7 is a view in perspective of the latch bolt.

FIG. 8 is a view in perspective of the friction spring.

FIG. 9 is an enlarged view in horizontal cross section through thecylinder and plug assembly of a plate tumbler lock with the keyinserted, the view being taken substantially on the line 99 of FIG. 6and viewed in the direction of the arrows.

FIG. 10 is a view in horizontal cross section through the plug assemblytaken in a plane substantially on the line 10-10 of FIG. 9 and viewed inthe direction of the arrows.

FIG. 11 is a view in rear elevation of an alternate rim lock assembly inwhich a pin tumbler lock is afiixed to or carried by the back plate.

FIG. 12 is a view in front elevation of the interior of the rear platewhich carries the pin tumbler lock.

FIG. 13 is a view in vertical cross section through the back plate andthe pin tumbler lock including the cylinder, plug and the cam memberattached to the plug at the interior of the back plate.

Referring more particularly to the disclosure in the drawing and to thenovel illustrative embodiment of the present invention, the disclosedrim lock assembly of FIGS. 1 to 10, inclusive, comprises a housing orbox 10 having a rectangular passage therein defined by the spaced upperand lower internal walls 11 and 12, the closed end wall 13 and inturnedflanges 14 and 15 at the other end wall for conformably receiving thelocking or latching end 16 of a sliding lock bolt 17. This bolt17 hasits projected locking end 16 movable through the slot 18 between thespaced flanges 14 and 15 of the end wall 19 of the housing and ismovable into and out of locking engagement with a strike plate (notshown). The upper and lower edges of the enlarged part or inner end 20of the bolt 17 are provided with a peripheral flange 21 and 22,respectively, and these flanges so contoured that the flange 22 isprovided with a narrow ledge 23 having sliding contact with the internalwall 12 as shown in FIG. 4, and both flanges provided with an inturnedshoulder 24. The flange 21 is slightly spaced from the internal wall 11to receive a leaf or friction spring 25, and this flange 21 is providedwith an arcuate depression or concavity 26 adapted to receive acorresponding concavity 27 adjacent one end of the leaf spring when thebolt 17 is moved to retracted position. This spring is also provided atits other or forward end with a short inturned projection 28 againstwhich a shoulder 24 on the flange 21 of the latch bolt engages when thebolt is moved toward its extended or locked position.

.Projecting through and journalled in the outer wall or face plate 29 ofthe latch bolt housing 10 is a shaft 31 afiixed to the rear of a knob orhandle 32 mounted at the exterior of the housing. Aflixed to the innerend of the shaft 31 at the interior of the housing is a cam member 33carrying an eccentrically mounted pin 34 projecting inwardly into thehousing and through an elongated and curved slot 35 in the inner end 20of the bolt 17 whereby rotating the knob 32 in one direction moves thebolt to its projected position and rotating bolt engages the short endor projection 28 of the spring 25 and the knob 32 and the pin 34 on theknob cam 33 must be turned across this high point 36 in the slot of thebolt. The projection 28 of the spring is thereupon compressed bymovement of the bolt toward its fully extended and locked position andupon the eccentric pin 34 passing this high point and entering the lowerend'of the slot 35, the projection 28 of the spring forces the bolt backagainst the pin and retains the bolt in its deadlocked position.

Affixed or formed integral with the back plate 37 pro viding a closurefor the rear of the housing 10, is a cylinder 38 containing a platetumbler lock assembly 39 including the revolving plug and tumblerassembly adapted to be turned by a key 41. The plate 37 of thissub-assembly is conformably received within the encompassing walls ofthe housing and seats upon the internal walls '11 and 12 and theembossments 40 in the housing.

To the inner squared and reduced end of the plug assembly is secured aplug cam 42 by means of a lock washer and plug screw 43. This plug camis provided with a cut-out 44 into which projects the eccentric pin 34(shown in dotted outline in FIG. 6) whereby rotating the lock 39 uponinsertion of the proper key 41 rotates the cam 42 and moves the pin 34in its slot 35 to retract the bolt 17.

The back plate 37 is provided with a flange 45 partially closing theslot 18 in housing 10, but allowing for the projection and retraction ofthe projecting end 16 of the bolt 17. The back plate 37 is also providedwith spaced openings 46 aligned with similarly spaced countersunkopenings 47 in the face plate 29 for the reception of two Wood or sheetmetal screws 48 for mounting the housing and its back plate to theinterior of a door or closure. Thus the door requires but one drilledopening through which is projected the cylinder 38 giving access to itslock from the exterior.

The plate tumbler lock assembly is shown more particularly in FIGS. 9and 10, and includes a plug 39 having at its inner end a squaredreduction 49 received in a conformed opening in the plug cam 42. Thisplug is diametrically or transversely slotted at 51 to receive multiplespring-biased plug tumblers or plates 52 extending therethrough and theends capable of being received in a longitudinal slot 53 in the cylinder38 when the key 41 is withdrawn, and when the proper key is insertedthese tumblers are adapted to be retracted from the slot to permit thelug 39 and its cam member 42 to be turned to carry therewith theeccentric pin 34 to re tract the latch bolt 17 and unlock the door.

In FIGS. 11, 12 and 13 is disclosed a pin tumbler unit 54 carried by theback plate 55 of the novel rim lock assembly. This pin tumbler unitcomprises a cylinder 56 having multiple radially extending recesses 57,a pin tumbler plug 58 also provided with radially extending recesses 59adapted to be moved into alignment with the recesses 57 in the cylinder56, and a retainer sleeve 61 encompassing the cylinder.

The cylinder is rigidly secured to the rear of the back plate 55 byspaced screws 62 projecting through openings in the back plate andreceived in tapped openings in the cylinder 56. The plug 58 isconformably and rotatably received in a cylindrical opening 63eccentrically arranged in the cylinder 56 and the radial recesses 59 ofthe plug provided with tumblers 64 and the radial recesses 57 in thecylinder 56 provided with aligned drivers 65 each spring-pressed by acoil spring 66 seating at its upper or outer end against and retained bythe retainer sleeve 61. A key 67 is adapted to release the tumblers 64from locking engagement so that the keyand plug 58 may be turned torotate the cam member 42 and cause the eccentric pin 34 to retract thelatch bolt.

The back plate 55 is similar to the back plate 37 (FIGS. 8 and 9) exceptthat it is shown indented at 68 on its inner face and thereat providedwith an opening 4 through which projects the square and reduced innerend 69 of the plug 58. This square end is adapted to be received in aconforming opening in the plug cam 42 secured to the plug by a lockwasher and plug screw 43, in the manner of the embodiment shown in FIG.9. As the remainder of this rim lock assembly, including the housing 10and contained assembly, is similar to that shown in FIGS. 1 to 8,inclusive, further reference thereto is unnecessary.

With either form of the rim lock assembly disclosed herein, the bolt 17may be projected to its dead-bolt locked position from the interior byturning of the knob 32 through approximately 90, or from the exterior byturning of the key 41 or 67 through approximately 90, from unlocked tolocked position.

Having thus disclosed the invention, I claim:

1. In a rim lock assembly for mounting upon the interior of a door, abolt housing, a bolt slidably mounted in said housing and having alocking projection movable into and out of an end wall of said housing,a knob rotatably mounted on said housing at the exterior thereof, ashaft afiixed at one end to said knob and rotatable in said housing, acam member mounted on the other end of said shaft within the housing andprovided with an eccentric pin, said bolt having a curved cam slot intowhich projects and moves said eccentric pin for moving the bolt and itslocking projection to retracted position or to projected and lockedposition upon turning of said knob, its cam member and pin, and a leafspring in said housing having a concave portion adjacent one end and aprojection adjacent the other end, said bolt having a depression forreceiving the concave portion of the spring when the bolt is retractedfor tensionally retaining said bolt in unlocked position, a shoulder onsaid bolt engaging and flexing the projection on said spring when thebolt is moved toward its projected, locking position in which the pin ismoved to adjacent one end of the slot, said slot having a high pointadjacent said one end whereby as the pin rides over this high point, thecompression on the projection of the spring is relieved and thisprojection forces the bolt inwardly against the pin to retain the boltin dead-locked position.

2 A rim lock assembly for a door, comprising a subas'sembl y including abolt housing, a bolt received and slidably mounted in said housing andhaving a locking projection movable into and out of said housing, a knobrotatably mounted on said housing, a shaft affixed at one end to saidknob and rotatable in said housing, a cam member mounted on the otherend of said shaft within the housing and provided with an eccentric pin,said bolt having an elongated curved slot into which projects saideccentric pin for moving the bolt and its locking projection toretracted position or to projected and locked position upon turning ofsaid knob and its cam member, a leaf spring in said housing having meansfor tensionally engaging and retaining said bolt in retracted positionand means for retaining said bolt in dead-locked position when projectedinto locking engagement, said elongated slot having a high pointadjacent the end occupied by the pin when the bolt is moved to itslocking position whereby as the pin rides over this high point, saidleaf spring forces the bolt inwardly against the pin to retain the boltin dead-locked position, and a sub-assembly at the rear of said housingand including a back plate providing a closure for the rear of saidhousing, a cylinder projecting irom said back plate and through anopening in the door to the exterior thereof, said cylinder containing alock accessible from the exterior and adapted to be turned uponinsertion and turning of the proper key and a cam at the interior of theback plate engaging and turning said eccentric pin upon turning of saidlock for moving said bolt.

3. A rim lock assembly for a door, comprising a subassembly including abolt housing, a bolt received and slidably mounted in said housing andhaving-a locking projection movable into and out of said housing, a knobrotatably mounted on said housing, a shaft afiixed at one end to saidknob and rotatable in said housing, a cam member mounted on the otherend of said shaft within the housing and provided with an eccentric pin,said bolt having an elongated curved slot into which projects saideccentric pin for moving the bolt and its locking projection toretracted position or to projected and locked position upon turning ofsaid knob and its cam member, a leaf spring in said housing having aconcave portion adjacent one end and a projection adjacent the otherend, said bolt having a depression for receiving the concave portion ofthe spring when the bolt is retracted for tensionally retaining saidbolt in unlocked position, a shoulder on said bolt engaging and flexingthe projection on said spring when the bolt is moved toward itsprojected, locking position in which the pin is moved to adjacent oneend of the slot, said slot having a high point adjacent said one endwhereby as the pin rides over this high point, the compression on theprojection of the spring is relieved and this projection forces the boltinwardly against the pin to retain the bolt in deadlocked position, anda subassembly at the rear of said housing and including a back plateproviding a closure for the rear of said housing, a cylinder projectingfrom said back plate and through an opening in the door to the exteriorthereof, said cylinder containing a lock accessible from the exteriorand adapted to be turned upon insertion and turning of the proper key,and a cam at the interior of the back plate engaging and turning saideccentric pin upon turning of said lock for moving said bolt.

4. A rim lock assembly for mounting upon the interior of a door withsaid door provided with an opening therethrough through which projects alock cylinder and contained lock, comprising a sub-assembly including abolt housing, a bolt received and slidably mounted in said housing andhaving a locking projection movable into and out of an end wall of saidhousing, means on the exterior of said housing for moving said bolt andits locking projection into retracted position to unlock the door andinto projected position in which the locking projection is moved tolocking position, a rotatable cam member in said housing and connectedto said means and provided with an eecentric pin, an elongated curvedslot in said latch bolt within the housing and receiving said pinwhereby rotation of said means in one direction retracts said bolt tounlocked position and rotating said means in the opposite directionprojects the bolt into locking engagement, and a leaf spring in saidhousing having a concave portion adjacent one end and a projectionadjacent the other end, said latch bolt having a depression forreceiving the concave portion of the spring when the bolt is retractedfor tensionally retaining said bolt in unlocked position, a shoulder onsaid bolt engaging and flexing the projection when the bolt is movedtoward its projected, locking position, and a sub-assembly including aback plate providing a closure for the rear of the housing, a cylindercarrying a tumbler lock and plug projecting through the opening in thedoor to the exterior thereof, and a cam rotatably mounted on the innerface of said back plate and rotatable with the plug of said tumblerlock, said last mentioned cam having a cutout into which projects saideccentric pin whereby said bolt may also be operated from the exteriorof the door by insertion of the proper key into and turning of the plugof said tumbler lock to thereby rotate said cam and pin and actuate saidbolt.

5. A rim lock assembly for mounting upon the interior of a door as setforth in claim 4, in which said cam comprises a circular plate with saidcut-out extending through an arc of approximately ninety degrees aboutits periphery.

References Cited in the file of this patent UNITED STATES PATENTS918,327 Jordon Apr. 13, 1909 1,446,865 Tueckmantel Feb. 27, 19231,591,010 Best July 6, 1926 2,058,517 Schoorel Oct. 27, 1936 2,119,175Niederdrenk May 31, 1938 2,174,958 Backhouse Oct. 3, 1939 2,447,190Lickteig Aug. 17, 1948 FOREIGN PATENTS 493,617 Great Britain Oct. 10,1938 761,691 Great Britain Nov. 21, 1956 855,898 France Feb. 26, 19401,124,543 France July 2, 1956

